99370728 has 24 divisors (see below), whose sum is σ = 269129250. Its totient is φ = 33123552.

The previous prime is 99370727. The next prime is 99370751. The reversal of 99370728 is 82707399.

It can be written as a sum of positive squares in only one way, i.e., 98366724 + 1004004 = 9918^2 + 1002^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (99370727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 690003 + ... + 690146.

Almost surely, 2^99370728 is an apocalyptic number.

It is an amenable number.

99370728 is an abundant number, since it is smaller than the sum of its proper divisors (169758522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99370728 is a wasteful number, since it uses less digits than its factorization.

99370728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380161 (or 1380154 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 99370728 is about 9968.4867457403. The cubic root of 99370728 is about 463.1832266828.

The spelling of 99370728 in words is "ninety-nine million, three hundred seventy thousand, seven hundred twenty-eight".